CVE-2026-30229 json
Parse Server: Endpoint `/loginAs` allows `readOnlyMasterKey` to gain full read and write access as any user
published 2026-03-06 8 mo ago modified 2026-09-08 2 mo ago also BIT-parse-2026-30229 , EUVD-2026-10060 , GHSA-79wj-8rqv-jvp5
- cvss
- 7.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 37%
- public exploits
- 0
- none known
Summary
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.6 and 9.5.0-alpha.4, the readOnlyMasterKey can call POST /loginAs to obtain a valid session token for any user. This allows a read-only credential to impersonate arbitrary users with full read and write access to their data. Any Parse Server deployment that uses readOnlyMasterKey is affected. This issue has been patched in versions 8.6.6 and 9.5.0-alpha.4.
Patch / fix
- npm parse-server 8.6.6, 9.5.0-alpha.4
- bitnami parse 9.5.0
- parseplatform parse-server 8.6.6, 9.5.0-alpha.4
- parseplatform parse_server 8.6.6, 9.5.0-alpha.4
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.5 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 8.5 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | parse-server | <8.6.6 >=9.0.0, <9.5.0-alpha.4 |
8.6.6 9.5.0-alpha.4 |
| bitnami | parse | <9.5.0 |
9.5.0 |
Affected products
- parse-community parse-server
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/parse-community/parse-server/security/advisories/GHSA-79wj-8rqv-jvp5
web, vendor-advisory, advisory
-
github.com
/parse-community/parse-server/releases/tag/8.6.6
web, product, release-notes, article
-
github.com
/parse-community/parse-server/releases/tag/9.5.0-alpha.4
web, product, release-notes, article
-
nvd.nist.gov
/vuln/detail/CVE-2026-30229
advisory, web
-
github.com
/parse-community/parse-server
package
Sources
- CVE List CVE-2026-30229
- GitHub Advisory GHSA-79wj-8rqv-jvp5
- NVD CVE-2026-30229
- OSV BIT-parse-2026-30229
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.